Senior Mechanical Engineer - Water Sector

Stantec; Cardiff; Hybrid; GBP 65,000 - 90,000; Full time

Benefits offered by this job

Hybrid / Flexible working

Training & development

Professional subscriptions

Enhanced pension plan

Private medical insurance

Life assurance

Gym membership

Job summary

Stantec is seeking a Senior Mechanical Engineer to lead mechanical design across major water and wastewater infrastructure projects. In a role based across Bristol, Cardiff or Exeter, you’ll collaborate with project managers and multidisciplinary teams to deliver practical, sustainable engineering solutions that meet project outcomes and client needs.

You’ll mentor junior engineers, drive feasibility through to construction support, and uphold engineering standards while contributing to

Qualifications

• Degree qualified in Mechanical Engineering or related discipline.
• Chartered or Incorporated Engineer (CEng/IEng) or actively working towards.
• Experience delivering mechanical design within the water sector or other regulated infrastructure.
• Strong understanding of mechanical design principles, engineering standards and industry best practice.
• Experience delivering technical design packages across multidisciplinary projects.
• Excellent communication and stakeholder management skills.
• Experience mentoring or supporting junior engineers.
• Strong organisational skills with the ability to manage multiple priorities.

Responsibilities

• Deliver mechanical design activities from feasibility to detailed design and construction support.
• Produce and review mechanical calculations, specifications, schedules, reports and documentation.
• Lead the design of pumping stations, water and wastewater treatment works, pipelines and related mechanical infrastructure.
• Undertake site visits, surveys and technical investigations as required.
• Collaborate with electrical, process, civil and structural engineers for integrated solutions.
• Guide clients, contractors and internal stakeholders while mentoring developing engineers.

Skills

Degree in Mechanical Engineering

CEng/IEng or working towards

Water sector experience

Mechanical design principles

Multidisciplinary teamwork

Mentoring

Communication & stakeholder management

Organisational skills

Education

Bachelor's degree in Mechanical Engineering

Job description

The Opportunity

With major investment transforming the UK water sector, there has never been a better time to join Stantec. We're delivering innovative engineering solutions across some of the country's largest water and wastewater programmes, helping our clients improve resilience, reduce environmental impact and create infrastructure that will serve communities for generations to come.

We're looking for a Senior Mechanical Engineer to join our growing Water team in Bristol, Cardiff or Exeter. This is an excellent opportunity to take the next step in your career, leading the technical delivery of mechanical engineering solutions while working alongside experienced multidisciplinary teams on nationally significant projects. You’ll have the opportunity to expand your technical expertise, mentor developing engineers and play a key role in delivering sustainable engineering solutions across the South West and Wales.

Working With Us, You'll Have The Opportunity To

• Lead the delivery of mechanical engineering solutions across major water and wastewater infrastructure projects.
• Take ownership of design packages from feasibility and optioneering through to detailed design and construction support.
• Mentor and support junior engineers while contributing to technical excellence across the team.
• Collaborate with multidisciplinary teams to deliver innovative and sustainable engineering solutions.

ABOUT THE ROLE

As a Senior Mechanical Engineer, you'll play a key role in delivering mechanical design services across a wide range of water and wastewater infrastructure projects. Working closely with Project Managers, technical specialists and multidisciplinary teams, you'll help develop practical, efficient and sustainable engineering solutions that deliver successful project outcomes.

Your Responsibilities Will Include

• Delivering mechanical design activities from feasibility and concept design through to detailed design and construction support.
• Producing and reviewing mechanical calculations, technical specifications, schedules, reports and engineering documentation.
• Leading the design of pumping stations, water and wastewater treatment works, pipelines and associated mechanical infrastructure.
• Undertaking site visits, surveys and technical investigations where required.
• Collaborating with electrical, process, civil and structural engineers to deliver integrated project solutions.
• Working with clients, contractors and internal stakeholders while providing technical guidance and mentoring to developing engineers.

YOUR IMPACT

Your work will directly contribute to the delivery of resilient water infrastructure that improves essential services, enhances environmental performance and supports sustainable growth across the UK. Through innovative mechanical engineering, you'll help clients deliver projects that improve operational efficiency, strengthen asset performance and provide long‑term value for the communities they serve.

You'll also help develop the next generation of engineers by sharing your technical knowledge and supporting a collaborative culture of continuous improvement, helping strengthen Stantec's Mechanical Engineering capability for the future.

About You

We're looking for an experienced Mechanical Engineer who enjoys taking ownership of technical delivery while working collaboratively within multidisciplinary teams.

Essential

• Degree qualified (or equivalent) in Mechanical Engineering or a related discipline.
• Chartered or Incorporated Engineer (CEng/IEng) or actively working towards.
• Experience delivering mechanical engineering design within the water sector or another regulated infrastructure industry.
• Strong understanding of mechanical design principles, engineering standards and industry best practice.
• Experience delivering technical design packages across multidisciplinary engineering projects.
• Excellent communication and stakeholder management skills.
• Experience mentoring or supporting junior engineers.
• Strong organisational skills with the ability to manage multiple priorities.

Desirable

• Experience within the water, utilities, energy or infrastructure sectors.
• Knowledge of pumping systems, treatment processes or mechanical plant design.
• Experience producing and reviewing technical specifications, reports and engineering documentation.
• Experience working alongside delivery contractors or supporting construction activities.

WHY JOIN US

• We put people first: We're proud of our friendly, inclusive and collaborative environment where everyone feels valued and driven to succeed.
• We are driven to achieve: Named in the top 50 companies to work by Glassdoor 2025. Recognised by Corporate Knights as one of the world's top 10 most sustainable companies 2025. Named ‘Best Place to Work’ and ‘International Consulting Firm of the Year’ at the NCE Awards 2024.
• We do what is right: Industry leading training and development as well as paid for professional subscriptions. A professional progression plan, supporting you to become chartered with ICE.
• We are better together: A supportive and collaborative team environment and Early Careers peer group and wider ERG network (see more on our ERGs here: Stantec Employee Resource Groups).
• Growth: We're on an exciting growth journey across the UK - we want you to be part of it!
• Great Benefits: Competitive salary, bonus schemes, enhanced pension plan, annual leave with the option to buy/sell additional days, private medical insurance, group income protection & life assurance included as standard as well as discounted gym membership and lots more.
• Hybrid / Flexible working: Enjoy a healthy work-life balance with our hybrid approach to flexible working.

If you're looking to take the next step in your Mechanical Engineering career while delivering innovative infrastructure that will shape the future of the UK's water sector, we'd love to hear from you.

#UKWater #MechanicalEngineering

About Stantec

The Stantec community unites more than 34,000 employees working in over 450 locations across 6 continents. We have been working with our clients and communities in the UK for over 150 years. We plan, design, deliver and manage the development and infrastructure needed to support the creation of sustainable, healthy and prosperous communities.

Our teams provide effective and relevant solutions, translating our clients’ vision into valued consents, deliverable plans for projects and programmes, and efficient designs for delivery, based on technical excellence and deep market insights. We deal with today’s challenges, but also keep a fairer, better tomorrow in sight, looking at how we deliver clean growth, support radical changes in our economy and meet the needs of future communities.

Stantec provides equal employment opportunities to all qualified employees and applicants for future and current employment and prohibit discrimination on the grounds of race, colour, religion, sex, national origin, age, marital status, genetic information, disability, sexual orientation, gender identity or gender expression. We prohibit discrimination in decisions concerning recruitment, hiring, referral, promotion, compensation, fringe benefits, job training, terminations or any other condition of employment. Stantec is in compliance with laws and regulations and ensures equitable opportunities in all aspects of employment.

Building an inspired, inclusive work environment that attracts, supports, and develops world-class talent is a crucial key to our success. If you are excited by this role but worry that your experience doesn’t exactly align, we encourage you to apply.

At Stantec we want you to perform your best at every stage of the recruitment process and are committed to ensuring it is accessible to all. If you need any support or require adjustments to be made then please contact [email protected] and we will talk to you about how we can support you.